BBC NewsFlights grounded across US as homeland security secretary says no indication of an attack
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文章摘要
BBC News · 文章頁摘要"Everybody's safe," the homeland security secretary says, telling journalists that the issue is due to a telecommunications outage.
Mullin says the focus at the moment is on restoring communication and to "get all the flights down" on the ground. He adds there isn't "any reason" to...